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Supply Voltage

7V

Input Voltage

7V

Operating Free Air Temperature Range

DM54LS and 54LS

b

DM74LS

Storage Temperature Range

b

Note

The ‘‘Absolute Maximum Ratings’’ are those values

beyond which the safety of the device cannot be guaran-

teed The device should not be operated at these limits The

parametric values defined in the ‘‘Electrical Characteristics’’

table are not guaranteed at the absolute maximum ratings

The ‘‘Recommended Operating Conditions’’ table will define

the conditions for actual device operation

Recommended Operating Conditions

Symbol

Parameter

DM54LS109A

DM74LS109A

Units

Min

Nom

Max

Min

Nom

Max

Supply Voltage

45

5

55

475

5

525

V

High Level Input Voltage

2

2

V

Low Level Input Voltage

07

08

V

High Level Output Current

b

04

b

04

mA

Low Level Output Current

4

8

mA

Clock Frequency (Note 2)

0

25

0

25

MHz

Clock Frequency (Note 3)

0

20

0

20

MHz

Pulse Width

Clock High

18

18

(Note 2)

Preset Low

15

15

ns

Clear Low

15

15

Pulse Width

Clock High

25

25

(Note 3)

Preset Low

20

20

ns

Clear Low

20

20

Setup Time

Data High

30

u

30

u

ns

(Notes12)

Data Low

20

u

20

u

Setup Time

Data High

35

u

35

u

ns

(Notes13)

Data Low

25

u

25

u

Hold Time (Note 4)

0

u

0

u

ns

Free Air Operating Temperature

b

55

125

0

70

C

Note 1

The symbol (

Note 2

Note 3

Note 4

2